Vesuvianite and Omphacite Optical Properties

Vesuvianite

Omphacite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Vitreous

1.2 Pleochroism

slight in colored varieties

Weak: colorless -- very pale green -- very pale green

1.3 Dispersion

NANA

0.007 1

2.5 Transparency

Not Available

TranslucentAnthony et al, Handbook of mineralogy (2001)

2.6 Refractive Index

1.703-1.7521.662-1.723

1 3.25

2.10 Optic Character

Not Available

2.11 Crystal System

tetragonal

Not Available

2.12 Birefringence

0.004-0.006Not Available

0 0.296

3.4 Clarity

Not Available

TranslucentAnthony et al

Vesuvianite and Omphacite Optic Character

Vesuvianite and Omphacite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Vesuvianite and Omphacite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Vesuvianite and Omphacite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Vesuvianite and Omphacite Transparency

Similar to their colors, Vesuvianite and Omphacite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Vesuvianite is Not Available while Vesuvianite is Not Available in appearance.